Anatomical variations of mesenteric arteries in 125 cases of the abdominal angiography - A trial to re-evaluate designation of the regional lymphnodes.:A Trial to Re-evaluate Designation of the Regional Lymphnodes

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The anatomical review of the angiographic representation of the tributary variation is made on the superior and inferior mesenteric arteries of the 125 colorectal cancer. cases. Current study of the lymphnodes in relatdon to such anatomical variations of branches of these arteries warrants reevaluation of the lymphnode numbering that has been listed on the general rules for clinical and pathological studies on cancer of the colon, rectum, and anus. Our considerations are summarized as follows, 1) The lymphonodes at the root of the right rolic prtery should be designated as No. 212 in case this artery emerges from the middle colic actery (incidence : 2 to 52 %) or from the ileocolic actery (7 to 12 %). 2) The accessory middle colic artery is found in 19 to 33 /o as reported. The lymphnodes at the root of this artery, if it exists, should be designated as No. 223. 3) The (accessory) middle colic artery emerges from the inferior mesenteric artery in 3.7 to 10 %. the lymphnodes at the root of the former artery should be treated as No. 222 in such cases. 4) Assuming that the term "sigmoid colon" artery is to be given to the vessels originating from either left colic or superior mesenteric areery to irrigate toward sigmoid colon, it is common to find one to five such arteries to be called by this term. It is advisable, therefore, that the sigmoid nodes are treated under inclusive numbering of No. 242, discarding the conventional discriminations such as No. 242-1 or No. 242-2. Key words : superior mesenteric artery, inferior mesenteric actery, arterial branching variations, rule for clinical and pathological studies on cancer of the colon, rectum, and anus.
日本大腸肛門病学会の論文

Anatomical variations of mesenteric arteries in 125 cases of the abdominal angiography - A trial to re-evaluate designation of the regional lymphnodes.:A Trial to Re-evaluate Designation of the Regional Lymphnodes

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